Glossary

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base
In Arrhenius theory, a substanceA material that is either an element or that has a fixed ratio of elements in its chemical formula. that increases the concentrationA measure of the ratio of the quantity of a substance to the quantity of solvent, solution, or ore. Also, the process of making something more concentrated. of hydroxide ions in an aqueousDescribing a solution in which the solvent is water. solutionA mixture of one or more substances dissolved in a solvent to give a homogeneous mixture.. In Bronsted-Lowry theory, a hydrogen-ion (protonThe positively charged particle in an atomic nucleus; its mass is similar to the mass of a hydrogen atom.) acceptor. In Lewis theory, a species that donates a pair of electrons to form a covalent bondThe attractive force between one atom (nucleus and core electrons) and another atom as a result of sharing electrons..